According to one app for nature observers, it's the most commonly seen creature in California: the western fence lizard. Why?

Rattlecam, a camera used by researchers and available to the public, is live streaming again. The camera is near a mega den that is home to as many as 2,000 snakes.

Discovered in Barbados in 2006, this worm-sized snake went misidentified for a century — and now, it may disappear before ...